ExtendScript filesystem access breaks mysteriously

Question

Hi,
I am experiencing mysterious issue with ExtendScript filesystem access. I have two ExtendScript functions which I am calling from my Illustrator html5 panel:
function p1_open(path) {
     app.open(new File(path));
function p1_openAsLayer(name, path) {
     var result = '';
     var doc = app.activeDocument;
     var layer = doc.layers.add();
     layer.name = name;
     var placedItem = layer.placedItems.add();
     try {
          placedItem.file = new File(path);
          placedItem.embed();
     } catch (e) {
          layer.remove();
          result = e;
     return result;
The first one works every time. The second one seems to "break" randomly - the result I get back when calling that function using CSInterface.evalScript is "ExtendScript error", and then it stays broken until I restart my computer (OS X Maverics, and I got report about it happening on other OS X computers).
This happens on all apps I am testing: Illustrator CC, Illustrator CC 2014, Photoshop CC and Phoshop CC 2014 (the Photoshop version has its own openAsLayer function, but it fails as well). When it gets to "broken" state, it is broken globally for all applications, including when I run scripts directly from ExtendScript Toolkit without being in any application scope.
It happens seemingly randomly, sometimes it works for days, sometimes it breaks soon after computer restart. I can easily detect when the app is in this "broken" state by trying to create File or Folder object for something which I am sure it exists - the "exists" property will be false. For example, when running this from ExtendScript Toolkit:
var f = new Folder("/Users/jan/Application Support/Adobe/CEP/extensions/ob-devel"); // the extension dir, it exists for sure
f.exists; // -> false
var f = new Folder("/Users/jan"); // my home folder, that one definitely exists :)
f.exists; // -> false
var f = new Folder("/Users"); // interestingly, this one stays correct, same for "/"
f.exists; // -> true
Any idea what might be causing this really mysterious issue? Or what could I do to track it down?
If you want to look at the extension causing the problems its here: https://www.dropbox.com/s/ugwm5lnrtdyqqms/openbrand-0.0.59-cc2014.zxp

Answer 1

This is random, but probably worth trying...putting the function inside of an object?
$.p1 = {
      _openAsLayer : function (name, path) {
     var result = '';
     var doc = app.activeDocument;
     var layer = doc.layers.add();
     layer.name = name;
     var placedItem = layer.placedItems.add();
     try {
          placedItem.file = new File(path);
          placedItem.embed();
     } catch (e) {
          layer.remove();
          result = e;
     return result;